# SPDX-License-Identifier: AGPL-3.0-or-later # # PASST - Plug A Simple Socket Transport # for qemu/UNIX domain socket mode # # PASTA - Pack A Subtle Tap Abstraction # for network namespace/tap device mode # # test/perf/passt_tcp - Check TCP performance in passt mode # # Copyright (c) 2021 Red Hat GmbH # Author: Stefano Brivio gtools /sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr # From neper nstools /sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr htools bc head sed seq # In this setup, virtio_net TX queue sometimes hangs, still under investigation def virtio_net_workaround guest modprobe -r virtio_net; modprobe virtio_net napi_tx=1; ip link set dev eth0 up; dhclient -4; dhclient -6; sleep 3 endef test passt: throughput and latency guest /sbin/sysctl -w net.core.rmem_max=536870912 guest /sbin/sysctl -w net.core.wmem_max=536870912 guest /sbin/sysctl -w net.core.rmem_default=33554432 guest /sbin/sysctl -w net.core.wmem_default=33554432 guest /sbin/sysctl -w net.ipv4.tcp_rmem="4096 131072 268435456" guest /sbin/sysctl -w net.ipv4.tcp_wmem="4096 131072 268435456" guest /sbin/sysctl -w net.ipv4.tcp_timestamps=0 ns /sbin/sysctl -w net.ipv4.tcp_rmem="4096 524288 134217728" ns /sbin/sysctl -w net.ipv4.tcp_wmem="4096 524288 134217728" ns /sbin/sysctl -w net.ipv4.tcp_timestamps=0 gout GW ip -j -4 route show|jq -rM '.[] | select(.dst == "default").gateway' gout GW6 ip -j -6 route show|jq -rM '.[] | select(.dst == "default").gateway' gout IFNAME ip -j link show | jq -rM '.[] | select(.link_type == "ether").ifname' hout FREQ_PROCFS (echo "scale=1"; sed -n 's/cpu MHz.*: \([0-9]*\)\..*$/(\1+10^2\/2)\/10^3/p' /proc/cpuinfo) | bc -l | head -n1 hout FREQ_CPUFREQ (echo "scale=1"; printf '( %i + 10^5 / 2 ) / 10^6\n' $(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq) ) | bc -l hout FREQ [ -n "__FREQ_CPUFREQ__" ] && echo __FREQ_CPUFREQ__ || echo __FREQ_PROCFS__ set THREADS 1 set STREAMS 8 set TIME 30 hout OMIT echo __TIME__ / 6 | bc -l set OPTS -Z -P __STREAMS__ -l 1M -i1 -O__OMIT__ --pacing-timer 1000000 info Throughput in Gbps, latency in µs, one thread at __FREQ__ GHz, __STREAMS__ streams report passt tcp __THREADS__ __FREQ__ th MTU 256B 576B 1280B 1500B 9000B 65520B tr TCP throughput over IPv6: guest to host bw - bw - virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1280 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 4M bw __BW__ 1.2 1.5 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1500 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 4M bw __BW__ 1.6 1.8 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 9000 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 8M bw __BW__ 4.0 5.0 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 65520 iperf3 BW guest ns __GW6__%__IFNAME__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 16M bw __BW__ 7.0 8.0 tl TCP RR latency over IPv6: guest to host lat - lat - lat - lat - lat - nsb tcp_rr --nolog -6 gout LAT tcp_rr --nolog -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tl TCP CRR latency over IPv6: guest to host lat - lat - lat - lat - lat - nsb tcp_crr --nolog -6 gout LAT tcp_crr --nolog -6 -c -H __GW6__%__IFNAME__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 500 400 tr TCP throughput over IPv4: guest to host virtio_net_workaround guest ip link set dev __IFNAME__ mtu 256 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 1M bw __BW__ 0.2 0.3 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 576 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 1M bw __BW__ 0.5 0.8 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1280 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 4M bw __BW__ 1.2 1.5 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 1500 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 4M bw __BW__ 1.6 1.8 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 9000 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 8M bw __BW__ 4.0 5.0 virtio_net_workaround guest ip link set dev __IFNAME__ mtu 65520 iperf3 BW guest ns __GW__ 100${i}2 __THREADS__ __TIME__ __OPTS__ -w 16M bw __BW__ 7.0 8.0 tl TCP RR latency over IPv4: guest to host lat - lat - lat - lat - lat - nsb tcp_rr --nolog -4 gout LAT tcp_rr --nolog -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tl TCP CRR latency over IPv4: guest to host lat - lat - lat - lat - lat - nsb tcp_crr --nolog -4 gout LAT tcp_crr --nolog -4 -c -H __GW__ | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 500 400 tr TCP throughput over IPv6: host to guest bw - bw - ns ip link set dev lo mtu 1280 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 1.0 1.2 ns ip link set dev lo mtu 1500 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 2.0 3.0 ns ip link set dev lo mtu 9000 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 5.0 6.0 ns ip link set dev lo mtu 65520 iperf3 BW ns guest ::1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 6.0 6.8 ns ip link set dev lo mtu 65535 tl TCP RR latency over IPv6: host to guest lat - lat - lat - lat - lat - guestb tcp_rr --nolog -P 10001 -C 10011 -6 nsout LAT tcp_rr --nolog -P 10001 -C 10011 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tl TCP CRR latency over IPv6: host to guest lat - lat - lat - lat - lat - guestb tcp_crr --nolog -P 10001 -C 10011 -6 nsout LAT tcp_crr --nolog -P 10001 -C 10011 -6 -c -H ::1 | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 500 350 tr TCP throughput over IPv4: host to guest ns ip link set dev lo mtu 256 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 0.3 0.5 ns ip link set dev lo mtu 576 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 0.5 1.0 ns ip link set dev lo mtu 1280 ns ip addr add ::1 dev lo iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 2.0 3.0 ns ip link set dev lo mtu 1500 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 2.0 3.0 ns ip link set dev lo mtu 9000 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 5.0 6.0 ns ip link set dev lo mtu 65520 iperf3 BW ns guest 127.0.0.1 100${i}1 __THREADS__ __TIME__ __OPTS__ bw __BW__ 6.0 6.8 ns ip link set dev lo mtu 65535 tl TCP RR latency over IPv4: host to guest lat - lat - lat - lat - lat - guestb tcp_rr --nolog -P 10001 -C 10011 -4 nsout LAT tcp_rr --nolog -P 10001 -C 10011 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 200 150 tl TCP CRR latency over IPv6: host to guest lat - lat - lat - lat - lat - guestb tcp_crr --nolog -P 10001 -C 10011 -4 nsout LAT tcp_crr --nolog -P 10001 -C 10011 -4 -c -H 127.0.0.1 | sed -n 's/^throughput=\(.*\)/\1/p' lat __LAT__ 500 300 te